If random variables x1 and x2 are independent, then o (x1+x2)= o (x1) + o(x2). Naim 04:33 AP Statistics Chapter 6 If random variables x1 and x2 are independent, then o (x1+x2)= o (x1) + o(x2). Answer: True Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+